Contents
- Weather in October
- Frequently asked questions
- Average temperature in October
- Average pressure in October
- Average wind speed in October
- Average humidity in October
- Average rainfall in October
- Average rainfall days in October
- Average snowfall in October
- Average snowfall days in October
- Average daylight in October
- Average sunshine in October
- Average sunshine days in October
- Average UV index in October
- Average cloud cover in October
- Average visibility in October
Weather in October
Temperature
During Mount Gretna's transition into October, the average high-temperature lessens, moving from a moderately hot 73.8°F (23.2°C) in September to a comfortable 61.7°F (16.5°C). Mount Gretna's October nights cool down to an average low-temperature of 46°F (7.8°C).Humidity
February, May and October, with an average relative humidity of 81%, are the most humid months.Rainfall
In Mount Gretna, during October, the rain falls for 11.4 days and regularly aggregates up to 1.42" (36mm) of precipitation. In Mount Gretna, during the entire year, the rain falls for 137.4 days and collects up to 16.26" (413mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. October is the first month it typically snows. Throughout October, in the average 0.1 snowfall days, it receives 0.16" (4mm) of snow. In Mount Gretna, during the entire year, snow falls for 19.5 days and aggregates up to 6.69" (170mm) of snow.Daylight
In October, the average length of the day is 11h and 7min.On the first day of October, sunrise is at 7:02 am and sunset at 6:47 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 6:03 pm EDT.
Sunshine
The average sunshine in October is 5.3h.UV index
The average daily maximum UV index in October is 3. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.Note: A maximum high UV index of 3 in October translates into the following recommendations:
Exercise prevention - Warding off sunburn is urged. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average October temperature?
What are the most humid months?
What is the average humidity in October?
How many days does it rain in October?
When does it start to snow?
How many hours of daylight does Mount Gretna have in October?
What time are sunrise and sunset in October?
How many hours of sunshine does Mount Gretna have in October?
What is the UV index reading in October in Mount Gretna?
Average temperature in October
Mount Gretna, PA
- Average high temperature in October: 61.7°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.8°F).
- Average low temperature in October: 46°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in October
Mount Gretna, PA
- Average pressure in October: 30.03"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in October
Mount Gretna, PA
- Average wind speed in October: 7mph
The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in October
Mount Gretna, PA
- Average humidity in October: 81%
The months with the highest relative humidity are February, May and October (81%).
The month with the lowest relative humidity is April (76%).
Average rainfall in October
Mount Gretna, PA
- Average rainfall in October: 1.42"
The wettest month (with the highest rainfall) is August (2.13").
The driest month (with the least rainfall) is February (0.94").
Average rainfall days in October
Mount Gretna, PA
- Average rainfall days in October: 11.4 days
The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (6.7 days).
Average snowfall in October
Mount Gretna, PA
- Average snowfall in October: 0.16"
The month with the highest snowfall is January (1.97").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in October
Mount Gretna, PA
- Average snowfall days in October: 0.1 days
The month with the highest number of snowfall days is January (5.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in October /
Average sunshine in October
Mount Gretna, PA
- Average daylight in October: 11h and 1min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in October: 5h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in October
Mount Gretna, PA
- Average sunshine days in October: 17.5 days
The month with the most sunshine days is January (20.3 days).
The month with the least sunshine days is May (11.5 days).
Average UV index in October
Mount Gretna, PA
- Average UV index in October: 3
The months with the highest UV index are May, June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in October
Mount Gretna, PA
- Average cloud cover in October: 44
The months with the most cloud cover are February and December (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in October
Mount Gretna, PA
- Average visibility in October: 5mi
The months with the highest visibility are January, February, March, April, June, July, November and December (6mi).
The months with the lowest visibility are May, August, September and October (5mi).
Mount Gretna, Pennsylvania, USA
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